Description
Xtra Seal 13-621 3/16" (5mm) Lead Wire Rubber Vulcanizing Inserts fill injury channels in passenger and truck radial or bias-ply tires. Dip-coated with premium blue vulcanizing gum, these stems vulcanize chemically or with heat systems. Installed from inside-out using the lead wire, requiring no special insertion tools. Box of 20.
Features
- Fills and seals the injury channel, giving a permanent repair rather than a temporary plug that weeps.
- Sized to a specific injury diameter, so match it to your cutter.
- For use in tire repairs, designed for heat vulcanization.
- Vulcanizing compound bonds into the channel instead of relying on friction alone.
- Boxed 20 to the container, sized for a working repair bench rather than a one-off job.
WARNING: This product can expose you to chemicals, which is known to the State of California to cause cancer and reproductive harm. For more information, go to www.P65Warnings.ca.gov.

